IS200WETAH1A | Mark VIe Time Sync Module | New Surplus

Description

Product Introduction

The GE IS200WETAH1A is a VMEbus Ethernet time synchronization module from the Mark VIe Speedtronic series, purpose-built for precision time synchronization in turbine control applications. This board provides accurate timing for the Mark VIe system using IEEE 1588 Precision Time Protocol (PTP) and Network Time Protocol (NTP), ensuring synchronized data logging, event sequencing, and control coordination across multiple controllers and remote I/O racks.

What sets the H1A revision apart is its dual independent Ethernet ports with support for IEEE 1588 PTP (grandmaster and slave modes), NTP, and hardware-based time stamping with 1 µs synchronization accuracy. The board integrates with the Mark VIe system’s timekeeping to ensure that events, alarms, and data logs are time-stamped with microsecond precision. For system integrators requiring synchronized control across multiple turbines or coordinated with plant DCS, this board is the direct OEM solution.

Key Technical Specifications

Key Selling Points & Differentiators

• Microsecond Precision: ±1 µs synchronization accuracy with IEEE 1588 PTP—ensures precise event correlation and data consistency across the entire control system.
• Dual Protocol Support: IEEE 1588 PTP and NTP—supports both high-precision and standard time sources.
• Flexible Modes: Grandmaster or slave PTP—can provide time to the system or accept time from an external source.
• Hardware Time Stamping: Dedicated hardware time stamping ensures µs accuracy without CPU intervention.
• System Integration: Time-stamps events, alarms, and data logs with µs precision for accurate sequence-of-events recording.
• Dual Ethernet Ports: Supports redundant time sources or separate time and data networks.
• Live Test Verified: Every board undergoes a 48-hour burn-in with PTP grandmaster and slave modes tested. We log synchronization accuracy, holdover performance, and protocol stack reliability.
• 90-Day Warranty: Covers functional defects. If it fails under normal operating conditions, we replace it. No restocking fee for verified returns.
• OEM Traceability: All units come from audited surplus channels with original GE anti-static bags and serialized labels. No clones, no pull-and-refurbish from unknown sources.
• Configuration Backup Service (Free): Upon request, we extract and archive your existing board’s firmware version and time configuration before shipment.

Frequently Asked Questions (FAQ)

Q: What is the difference between IS200WEMAH1A and IS200WETAH1A?

A: The WEMA is a general-purpose Ethernet communications module for network connectivity and protocol support (Modbus, OPC UA, Ethernet/IP). The WETA is a dedicated time synchronization module specifically for IEEE 1588 PTP and NTP. If you need precision time synchronization, use WETA. If you need general Ethernet communications, use WEMA.

Q: What is IEEE 1588 PTP and why is it important?

A: IEEE 1588 Precision Time Protocol (PTP) provides microsecond-level time synchronization across a network. For turbine control, this means events, alarms, and data logs are accurately time-stamped across multiple controllers and I/O racks. This is critical for sequence-of-events recording and root cause analysis—knowing exactly which event occurred first can be essential for diagnosing turbine trips. PTP delivers ±1 µs accuracy vs. milliseconds for NTP.

Q: Can I use this board with an external GPS time source?

A: Yes. The WETAH1A can synchronize to an external NTP server (which may be GPS-referenced) or can act as an NTP client. Alternatively, you can connect the board to a PTP grandmaster with GPS reference. The board supports both PTP and NTP, so you can configure it to accept time from the source available in your plant.

Q: What is the difference between PTP grandmaster and slave modes?

A: Grandmaster mode: The board provides the time reference to other devices on the network—it is the primary time source for the system.
Slave mode: The board receives its time from an external PTP grandmaster and distributes it to the Mark VIe system.

You can configure the board for either mode. In grandmaster mode, the board’s internal oscillator provides time; in slave mode, it synchronizes to an external source. We recommend using an external GPS-referenced grandmaster for maximum accuracy.

Q: What is the holdover performance if the time source is lost?

A: The WETAH1A includes an internal oven-controlled oscillator (OCXO) that provides holdover accuracy better than ±1 µs per hour if the external time source is lost. For longer outages, accuracy degrades to approximately ±10 µs per 24 hours. This ensures time consistency during network interruptions.

Q: Is this board hot-swappable?

A: No. The Mark VIe VME backplane does not support live insertion. You must de-energize the rack, ground yourself, and wait 30 seconds for bulk capacitors to discharge. We’ve seen field crews pull a WETA while the cabinet was still powered—it corrupted the time configuration and damaged the network PHY chips. Don’t risk it.

Q: Does this board work with the newer Mark VIeS (SIL-rated) cabinets?

A: To be direct: no. The IS200WETAH1A is not SIL-certified. It’s meant for standard Mark VIe industrial control. The SIL-rated systems use the IS220WETA (with additional redundancy, diagnostic coverage, and separate safety shutdown path). Mixing them violates your site’s safety integrity level. If you’re in a SIL environment, we can source the correct variant but it will have a different model number.

Q: What is the typical lead time for this part?

A: We stock these on the shelf—usually ship within 24 hours of order placement and payment confirmation. For international orders, add 3–5 days for customs. If you need expedited (overnight air), we can do that, but you’ll need to coordinate with our logistics team for the cut-off time.

Q: What’s your return policy if this doesn’t solve my time synchronization issue?

A: If the board is electrically functional (passes our QC test) but doesn’t correct your fault, we’ll accept a return within 30 days provided the board shows no physical damage and the connectors are intact. We do charge a 15% restocking fee if the fault was due to network configuration issues, protocol mismatches, or toolkit compatibility problems. We’ll work with you over the phone or email to diagnose the problem before we ship—our goal is to get you running, not to ship boxes back and forth.

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